linear pattern sheet metal doesn't flatten/unfold

Hey, I have linear patterned a sheet metal body in a part. The seed body flattens without problems however the patterned bodies all give a the error "cannot display bend line for this bend" and only flattens 2 out of the 4 bends. The bodies are all identical, and there are no features after the pattern.

Does anyone know what could be the problem? Unfortunately I can't upload the model.

Thanks.

SolidworksSheet Metal